diff --git a/src/Mutator/Extensions/MBString.php b/src/Mutator/Extensions/MBString.php
index 287e851f5..0fe91e649 100644
--- a/src/Mutator/Extensions/MBString.php
+++ b/src/Mutator/Extensions/MBString.php
@@ -87,9 +87,9 @@ private function setupConverters(array $functionsMap): void
             'mb_ereg_match' => $this->mapNameSkipArg('preg_match', 2),
             'mb_ereg_replace_callback' => $this->mapNameSkipArg('preg_replace_callback', 3),
             'mb_ereg_replace' => $this->mapNameSkipArg('ereg_replace', 3),
-            'mb_ereg' => $this->mapNameSkipArg('ereg', 3),
+            'mb_ereg' => $this->mapName('ereg'),
             'mb_eregi_replace' => $this->mapNameSkipArg('eregi_replace', 3),
-            'mb_eregi' => $this->mapNameSkipArg('eregi', 3),
+            'mb_eregi' => $this->mapName('eregi'),
             'mb_ord' => $this->mapNameSkipArg('ord', 1),
             'mb_parse_str' => $this->mapName('parse_str'),
             'mb_send_mail' => $this->mapName('mail'),